Fairchild Semiconductor Corporation

Beceem Communications Inc.

Arvin Ramesh Shahani

Derek Keith Shaeffer

Peter Capofreddi

Korhan Titizer

In one embodiment, a method is provided for delivering optimal charge bursts in a voltage regulator under light load conditions. The method includes: in an initial period, determining an optimal turn-on time for a high-side switch of the voltage regulator to produce a desired voltage ripple; and in steady-state operation, turning on the high-side switch for approximately the optimal turn-on time, thereby delivering optimal charge bursts for the desired voltage ripple in the voltage regulator.

Delivering optimal charge bursts in a voltage regulator

A transconductance cell is disclosed that includes a first transistor and a second transistor. A regulator regulates an average voltage in response to a reference voltage, where the average voltage corresponds to the average of a voltage at a bias terminal of the first transistor and a voltage at a bias terminal of the second transistor. A mixer including the transconductance cell is also disclosed. In the mixer, the transconductance cell receives a differential input voltage and produces a differential output current. The mixer also includes one or more switches that multiply the differential output current with an oscillator signal. A method is disclosed that includes measuring an average voltage of a voltage at a bias terminal of a first transistor and a voltage at a bias terminal of a second transistor and regulating the average voltage responsive to the measured average voltage and a reference voltage.

Growing community of inventors

Menlo Park, CA, United States of America

Arvin Ramesh Shahani